66WR2KLF

Series:	66
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Resistance:	2 kOhms
Power (Watts):	0.5W, 1/2W
Tolerance:	±10%
Temperature Coefficient:	±100ppm/°C
Number of Turns:	20
Adjustment Type:	Top Adjustment
Resistive Material:	Cermet
Mounting Type:	Through Hole
Termination Style:	PC Pins
Size / Dimension:	Rectangular - 0.375" x 0.200" Face x 0.410" H (9.53mm x 5.08mm x 10.41mm)

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Trimmer Potentiometers: 66WR2KLF Application Field and Working Principle

Trimmer potentiometers are a type of adjustable electrical component that are used to change the amount of current that flows through circuits. They are primarily used in electronic circuits and components to adjust the frequency, voltage, or resistance levels. The 66WR2KLF is a trimmer potentiometer produced by Bourns which is designed for demanding temperature ranges and long-term stability. This article outlines the application field and working principle of the 66WR2KLF trimmer potentiometer.

Application Field of the 66WR2KLF

The 66WR2KLF is a trimmer potentiometer that offers a linear resistance taper, allowing it to be used in a variety of electronic applications. It is designed to maintain its performance and long-term stability after extended exposure to harsh conditions and temperatures. The typical applications of the 66WR2KLF trimmer potentiometer include:

• Electrical power supplies
• Industrial controls and automation
• Radio and television tuning circuits
• Security systems and devices
• Speed controllers for electric motors

Working Principle of the 66WR2KLF

The 66WR2KLF trimmer potentiometer is a three-terminal device which works by controlling the resistance between the Sense and Power terminals. When the hardware connected to the Sense and Power terminals is operated, the resistance between them is controlled by a wiper that is moved along the resistance track. This wiper is connected to a rotating shaft that is connected to a knob or lever. By turning the knob or lever, the wiper is moved along the resistance track, thus changing the resistance between the two terminals and thereby controlling the current the flows through them. The third terminal of the 66WR2KLF is known as the Adj terminal and this is used to adjust the resistance to a specific level. Although the 66WR2KLF offers a linear resistance taper, an additional adjustment can be made to ensure it offers a logarithmic response instead, which is useful for some electronic applications. This is done by adjusting the wiper position further to cover more or less than half of the resistance track. This will affect the shape of the resistance taper, resulting in a logarithmic response.

Conclusion

The 66WR2KLF trimmer potentiometer is designed to provide a stable, reliable performance even when exposed to harsh conditions and temperatures. It offers a linear resistance taper which can be adjusted to provide a logarithmic response instead. The 66WR2KLF is primarily used in electrical power supplies, industrial controls and automation, radio and television tuning circuits, security systems, and speed controllers for electric motors.

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